resample
|
Contents: Description, Arguments, Usage, Examples, Images, Related Functions Supported Under Version: > 1.72 Current Davinci Version: 2.27 64-bit Safe: No
Description Resample a spectrum to a given scale using a cubic spline interpolator
Arguments and Return Values Arguments: A numeric array and two scales Return Value: A numeric array
Usage Syntax: resample(spectra, old scale, new scale) or resample(spectral_structure, new scale) 'spectra' - Spectra to be resampled 'old scale' - The scale of the old spectra 'new scale' - The desired scale of the spectra 'spectral_structure' - The structure containing .data, .label or .sample_name, and .xaxis resample() does a spline interpolation between points to fill in the data
Examples dv> a
10x1x1 array of float, bsq format [40 bytes]
0.0268005 2.73336 2.09211 2.52448 2.75938 2.74045 9.32405 0.195576 5.41650 3.36574
dv> old_scale = a
10x1x1 array of int, bsq format [40 bytes]
1 2 3 4 5 6 7 8 9 10
dv> new_scale = create(100,1,1,start=1,step=.1,format=float)
100x1x1 array of float, bsq format [400 bytes]
1.00000 1.10000 1.20000 1.30000 1.40000 1.50000 1.60000 1.70000 1.80000 1.90000
2.00000 2.10000 2.200002.30000 2.40000 2.50000 2.60000 2.70000 2.80000 2.90000
3.00000 3.10000 3.20000 3.30000 3.40000 3.50000 3.60000 3.70000 3.80000 3.90000
4.00000 4.10000 4.20000 4.30000 4.40000 4.50000 4.60000 4.70000 4.80000 4.90000
5.00000 5.10000 5.20000 5.30000 5.40000 5.50000 5.60000 5.70000 5.80000 5.90000
6.00000 6.10000 6.20000 6.30000 6.40000 6.50000 6.60000 6.70000 6.80000 6.90000
7.00000 7.10000 7.20000 7.30000 7.40000 7.50000 7.60000 7.70000 7.80000 7.90000
8.00000 8.10000 8.20000 8.30000 8.40000 8.50000 8.60000 8.70000 8.80000 8.90000
9.00000 9.10000 9.20000 9.30000 9.40000 9.50000 9.60000 9.70000 9.80000 9.90000
10.0000 10.1000 10.2000 10.3000 10.4000 10.5000 10.6000 10.7000 10.8000 10.9000
dv> b=resample(a,old_scale,new_scale)
struct, 3 elements
data: 1x1x100 array of float, bsq format [400 bytes]
label: 0
xaxis: 1x1x100 array of float, bsq format [400 bytes]
Images
|
DavinciWiki Mini-Nav Bar Contents
Contact Developers
All other topics
Recent Core Changes Modified On: 03-30-2009 |
